Please use python to do this and post both code and the screen shot of it , all the files are in this link: https://drive.google.com/open?id=1P3pIsSfD8YZXIqnEmuFD3KdTpn-x3-mg

Question is in skeleton.py and the picture in the link.

 Don't change the ecosystem.py module. The following steps are recommended: ------------------------------------------------- 1. Create MaleBear and FemaleBear classes that inherit from the Bear class. 2. Use BearM.gif and BearF.gif for their shapes. 3. Change mainSimulation() method so that it creates FemaleBear and MaleBear with equal probability (using the random module) instead of Bear. 4. Change the constructor of the FemaleBear class to store its pregnancy state. 5. Change liveALittle() method of MaleBear class so that it does not breed but calls tryToMate() (if it's breedTick is greater than breedTime). Don't forget to call the parent's liveALittle() using super(). You also have to change Bear.liveALittle() for that. 6. Implement tryToMate() method for MaleBear. (Hint: See the implementation of tryToEat() method.) It should call a FemaleBear's getPregnant() method (which you will implement later). 7. Change liveALittle() method in FemaleBear to increment breedTick only if she is pregnant. When breedTick exceeds breedTime, call tryToBreed(). Now, increasing breedTick is not a common behavior of MaleBear and FemaleBear anymore. (You need to change Bear.liveALittle() and MaleBear.liveALittle()) 8. Override the tryToBreed() method of Animal for FemaleBear. Make sure that a femaleBear only gives birth to a child if she is ready and pregnant. A FemaleBeae gives birth to a MaleBear or FemaleBear with equal probability. (Hint: See the implementation of Organism.tryToBreed() method). 9. Implement the getPregnant() method in FemaleBear class that prints one of two messages: "Successfully impregnated" or "Already pregnant". 

Skeleton.py:

from ecosystem import * class Bear(Animal): def __init__(self): super().__init__() self.turtle.shape("Bear.gif") self.breedTime = 4 self.starveTime = 12 def liveALittle(self): self.tryToEat(Fish) super().liveALittle() self.breedTick += 1 if self.breedTick >= self.breedTime: self.tryToBreed() ### Define MaleBear and FemaleBear here def mainSimulation(): numberOfBears = 15 numberOfFish = 15 numberOfPlants = 0 worldLifeTime = 50 worldWidth = 10 worldHeight = 10 random.seed(0) myworld = World(worldWidth,worldHeight) myworld.draw() for i in range(numberOfFish): newfish = Fish() (x,y) = myworld.findEmptyLocation() myworld.addThing(newfish,x,y) for i in range(numberOfBears): # TODO change the following line so that either MaleBear or FemaleBear # is created with equal probability newbear = Bear() (x,y) = myworld.findEmptyLocation() myworld.addThing(newbear,x,y) for i in range(numberOfPlants): newplant = Plant() (x,y) = myworld.findEmptyLocation() myworld.addThing(newplant,x,y) for i in range(worldLifeTime): myworld.liveALittle() myworld.freezeWorld() if __name__ == "__main__": mainSimulation() 

ecosystem.py:

import turtle import random class World: def __init__(self, mx, my): self.maxX = mx self.maxY = my self.thingList = [] self.grid = [[None for x in range(mx)] for y in range(my)] self.offsetList = [(-1,1),(0,1),(1,1),(-1,0),(1,0),(-1,-1),(0,-1),(1,-1)] self.wturtle = turtle.Turtle() self.wscreen = turtle.Screen() self.wscreen.setworldcoordinates(0,0,mx-1,my-1) self.wscreen.addshape("Bear.gif") self.wscreen.addshape("BearM.gif") self.wscreen.addshape("BearF.gif") self.wscreen.addshape("Fish.gif") self.wscreen.addshape("Plant.gif") self.wturtle.hideturtle() def draw_line(self, x, y, heading, length): self.wturtle.up() self.wturtle.goto(x, y) self.wturtle.down() self.wturtle.setheading(heading) self.wturtle.forward(length) def draw(self): self.wscreen.tracer(0) for i in range(self.maxX): self.draw_line(i, 0, 90, self.maxY-1) for i in range(self.maxY): self.draw_line(0, i, 0, self.maxX-1) self.wscreen.tracer(1) def freezeWorld(self): self.wscreen.exitonclick() def addThing(self, athing, x, y): athing.setX(x) athing.setY(y) self.grid[y][x] = athing athing.setWorld(self) self.thingList.append(athing) athing.appear() def delThing(self,athing): athing.hide() self.grid[athing.getY()][athing.getX()] = None self.thingList.remove(athing) def moveThing(self,oldx,oldy,newx,newy): self.grid[newy][newx] = self.grid[oldy][oldx] self.grid[oldy][oldx] = None def withinGrid(self,x,y): return 0 <= x < self.maxX and 0 <= y < self.maxY def liveALittle(self): random.shuffle(self.thingList) for athing in self.thingList: athing.liveALittle() def emptyLocation(self,x,y): return self.grid[y][x] == None def lookAtLocation(self,x,y): return self.grid[y][x] def findEmptyLocation(self): x = random.randrange(self.maxX) y = random.randrange(self.maxY) while not self.emptyLocation(x,y): x = random.randrange(self.maxX) y = random.randrange(self.maxY) return (x,y) def randAdjLocation(self,xpos,ypos): nextx = nexty = -1 while not self.withinGrid(nextx,nexty): randomOffsetIndex = random.randrange(len(self.offsetList)) randomOffset = self.offsetList[randomOffsetIndex] nextx = xpos + randomOffset[0] nexty = ypos + randomOffset[1] return (nextx,nexty) ############################################################ class Organism: def __init__(self): self.turtle = turtle.Turtle() self.turtle.up() self.turtle.hideturtle() self.world = None self.xpos = 0 self.ypos = 0 self.starveTick = 0 self.breedTick = 0 def setX(self,newx): self.xpos = newx def setY(self,newy): self.ypos = newy def getX(self): return self.xpos def getY(self): return self.ypos def setWorld(self,aworld): self.world = aworld def appear(self): self.turtle.goto(self.xpos, self.ypos) self.turtle.showturtle() def hide(self): self.turtle.hideturtle() def tryToBreed(self): (nextx,nexty) = self.world.randAdjLocation(self.xpos,self.ypos) if self.world.emptyLocation(nextx,nexty): theClass = self.__class__ childThing = theClass() self.world.addThing(childThing,nextx,nexty) self.breedTick = 0 def listOfAdjacent(self, aClass): adjprey = [] for offset in self.world.offsetList: newx = self.xpos + offset[0] newy = self.ypos + offset[1] if self.world.withinGrid(newx,newy): if not self.world.emptyLocation(newx,newy): thing = self.world.lookAtLocation(newx,newy) if isinstance(thing, aClass): adjprey.append(thing) return adjprey ############################################################ class Animal(Organism): def move(self,newx,newy): self.world.moveThing(self.xpos,self.ypos,newx,newy) self.xpos = newx self.ypos = newy self.turtle.goto(self.xpos, self.ypos) def tryToMove(self): (nextx,nexty) = self.world.randAdjLocation(self.xpos,self.ypos) if self.world.emptyLocation(nextx,nexty): self.move(nextx,nexty) def tryToEat(self, preyClass): adjprey = self.listOfAdjacent(preyClass) if len(adjprey) > 0: randomprey = adjprey[random.randrange(len(adjprey))] preyx = randomprey.getX() preyy = randomprey.getY() self.world.delThing(randomprey) self.move(preyx,preyy) self.starveTick = 0 def liveALittle(self): self.starveTick = self.starveTick + 1 if self.starveTick == self.starveTime: self.world.delThing(self) else: self.tryToMove() ############################################################ class Fish(Animal): def __init__(self): Organism.__init__(self) self.turtle.shape("Fish.gif") self.breedTime = 10 self.starveTime = 25 def liveALittle(self): adjfish = self.listOfAdjacent(Fish) if len(adjfish) >= 2: self.world.delThing(self) else: self.tryToEat(Plant) super().liveALittle() self.breedTick = self.breedTick + 1 if self.breedTick >= self.breedTime: self.tryToBreed() ############################################################ class Plant(Organism): def __init__(self): super().__init__() self.turtle.shape("Plant.gif") self.breedTime = 5 def liveALittle(self): self.breedTick = self.breedTick + 1 if self.breedTick >= self.breedTime: self.tryToBreed()